Rainier Arms Thunder Bolt° AR15 AR-15
Rainier Arms Thunder Bolt™ AR15 AR-15

Rainier Arms Thunder Bolt° AR15 AR-15

Part Number:Rainier-TB
Your Price: $59.95
Out of Stock.

Rainier Arms Thunder Bolt™ AR15 AR-15


The Thunder Bolt™ was created to meet and exceed all Mil Spec standards. Giving you the confidence to run your weapon long and hard at 110%. You will never have to worry about your bolt being the weakest link in your weapon. The bolts are HPT & MPI tested & Marked to give you ultimate confidence in your weapon system. Most bolts in the market place today is made from 8620 and not Carpenter A-158. Rainier goes the extra mile making sure everything is to the highest quality. If your life is on the line, you can trust Rainier Arms.


  • Carpenter A-158
  • Shot Peened
  • Heat Treated
  • Manganese Phosphate Coating


  • Machined from bar
  • Shot Peened
  • Heat Treated
  • Maganese Phosphate Coating

Extractor Spring:

  • Chrome Silicone for Longer Life
  • Black Insert as per current Mil-Spec
  • “O” Ring is high temp resistant dark brown

Extractor Retaining Pin:

  • Precision Machined
  • Precision ground to diameter
  • Precision ground to length
  • Heat Treated

Gas Rings:

  • Stainless Steel per Mil-Spec


  • Precision machined
  • Heat Treated

Ejector Spring:

  • Chrome Silicone
  • Precision ground ends

Ejector Retaining Pin:

  • Precision cut to length
  • Black Zinc Coating

Limited Lifetime Warranty
We are so confident in our Rainier Arms Thunder Bolt we offer them with a limited lifetime warranty. So if at anytime your Rainier Arms Thunder Bolt breaks on you during normal use (Intentional abuse & Gas Key wear not included) we will replace it.

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